Electro-hydraulic servo fatigue and tuberculosis testing machine

Abstract

The utility model relates to the technical field of fatigue and tuberculosis testing machines, in particular to an electro-hydraulic servo fatigue and tuberculosis testing machine which comprises a box body mounted on one side of the bottom of a base, a driving mechanism arranged in the box body, at least two limiting rods mounted on the top of the base, a top plate fixedly mounted on the tops of the limiting rods, and a movable plate arranged below the top plate. The two sides of the top of the moving plate are connected with the top plate through first hydraulic rods, a second hydraulic rod is installed on the top of the moving plate, the bottom of the second hydraulic rod extends to the position below the moving plate, a detection pressing block is fixedly installed on the second hydraulic rod, and a U-shaped protection plate with an opening in the side face is fixedly installed on the top of the base. The top of the U-shaped protection plate is fixed to the top edge of the top plate. The U-shaped protection plate and the baffle are installed on the base, a to-be-tested workpiece can be blocked during testing, the situation that after the workpiece reaches the fatigue limit, fragments generated by fracture burst out and hurt workers is avoided, and the use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue test machines, in particular to an electro-hydraulic servo fatigue test machine. Background Art

[0002] Electro-hydraulic servo fatigue testing machine is a general term for a type of fatigue testing machine that uses a constant pressure servo pump station as a power source. It can perform fatigue tests on the product's reciprocating bending and other performance.

[0003] The existing electro-hydraulic servo fatigue testing machine is a testing equipment composed of a frame, a test bench, a hydraulic cylinder, a private service system and other systems. During the test, the workpiece to be tested is placed on the test bench, and then the test block is controlled by the hydraulic cylinder to apply force to the workpiece to be tested. The workpiece to be tested is repeatedly bent by the reciprocating movement of the hydraulic cylinder to perform fatigue testing on the workpiece to be tested. However, during the test, the workpiece to be tested is exposed to the external environment. When the workpiece to be tested reaches the fatigue limit and breaks, the debris produced by the fracture is easy to collapse and injure the staff, and the test bench generally needs to be fixed to the frame by multiple bolts. When different workpieces need to be tested, the staff needs to use a wrench to remove the bolts one by one before replacing the test bench, and after replacement, the bolts need to be installed one by one, which is troublesome. For this reason, we propose an electro-hydraulic servo fatigue testing machine. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes an electro-hydraulic servo fatigue testing machine.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: design an electro-hydraulic servo fatigue tester, including a base, a box body is installed on one side of the bottom of the base, and a driving mechanism is arranged inside the box body;

[0006] At least two limit rods are installed on the top of the base, a top plate is fixedly installed on the top of the limit rods, a movable plate is provided below the top plate, both sides of the top of the movable plate are connected to the top plate through a first hydraulic rod, and a second hydraulic rod is installed on the top of the movable plate, the bottom of the second hydraulic rod extends to the bottom of the movable plate, and a detection pressure block is fixedly installed on the second hydraulic rod;

[0007] A U-shaped protective plate with an opening on the side is fixedly installed on the top of the base, the top of the U-shaped protective plate is fixed on the top edge of the top plate, skirts are extended at both ends of the opening of the U-shaped protective plate, and a limit plate is installed on one side of each skirt, the limit plate is set in an "L" shape, and a slide groove is formed between the limit plate and the skirt, and a strip sliding plate is provided in the slide groove, and a baffle is fixedly installed between the two strip sliding plates, and the baffle covers the opening of the U-shaped protective plate;

[0008] The top of the base is connected with a mounting plate through an adjustment mechanism, a storage platform is provided on the top of the mounting plate, the storage platform is located below the detection pressure block, a pair of positioning blocks are installed on both sides of the base, a guide rod is fixedly installed between each pair of positioning blocks, strip fixing plates are provided at both ends of the storage platform, both ends of each strip fixing plate extend above the guide rod, and both ends of the bottom of each strip fixing plate are slidably sleeved on the guide rod through a slider;

[0009] A second threaded through hole is provided on the top of each strip-shaped fixing plate, and a fastening bolt is provided inside the second threaded through hole, and the bottom of the fastening bolt contacts the top of the mounting plate.

[0010] Preferably, the adjustment mechanism comprises a positioning plate fixed to the top of the base, a third hydraulic rod is installed on the side of the positioning plate, and one end of the third hydraulic rod is fixed to the side of the mounting plate;

[0011] At least one guide rail is arranged at the bottom of the mounting plate, one end of the guide rail extends out of the U-shaped protective plate, and the bottom of the mounting plate is slidably matched with the guide rail through a strip guide block.

[0012] Preferably, a plurality of connection blocks are installed on the side of the movable plate, and the other end of each connection block is slidably sleeved on the corresponding limiting rod.

[0013] Preferably, the driving mechanism comprises a servo hydraulic station installed inside the box, and the servo hydraulic station is connected to the first hydraulic rod, the second hydraulic rod and the third hydraulic rod respectively through hydraulic pipelines.

[0014] Preferably, a display is installed on one side of the top of the base, and a controller is also installed inside the box, and the controller is connected to the display and the servo hydraulic station respectively through wires.

[0015] Preferably, an open slot is provided at the bottom of the baffle, and when the baffle is located at the lowest end, the guide rail is located in the open slot.

[0016] Preferably, a first threaded through hole is formed on the side surface of each limiting plate, a locking bolt is formed inside the first threaded through hole, and one end of the locking bolt contacts the side surface of the strip sliding plate.

[0017] Preferably, a plurality of feet are installed at the bottom of the box body, and a plurality of legs are installed at a side of the bottom of the base away from the box body.

[0018] The design scheme proposed by the utility model has the following beneficial effects during application:

[0019] 1. By installing a U-shaped protective plate and baffle on the base, the workpiece to be tested can be blocked during the test to prevent the debris generated by the workpiece breaking after reaching the fatigue limit from collapsing and injuring the staff, thereby improving the use effect.

[0020] 2. By rotating the locking bolts, the two strip fixing plates can fix the storage table on the mounting plate, which is convenient for fixing. When testing different workpieces to be tested, the storage table matching the workpiece to be tested can be easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 It is a structural schematic diagram of the adjustment mechanism and the mounting plate of the utility model.

[0024] In the figure: 1. base; 2. slider; 3. opening groove; 4. limit plate; 5. locking bolt; 6. strip sliding plate; 7. baffle; 8. first hydraulic rod; 9. limit rod; 10. top plate; 11. display; 12. skirt; 13. first threaded through hole; 14. storage table; 15. guide rod; 16. strip fixing plate; 17. fastening bolt; 18. controller; 19. support leg; 20. support foot; 21. servo hydraulic station; 22. box; 23. guide rail; 24. positioning block; 25. connecting block; 26. second hydraulic rod; 27. moving plate; 28. detection pressure block; 29. ​​positioning plate; 30. strip guide block; 31. third hydraulic rod; 32. mounting plate; 33. U-shaped protective plate; 34. second threaded through hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-Figure 3 The electro-hydraulic servo fatigue tester comprises a base 1, a box 22 is installed on one side of the bottom of the base 1, a driving mechanism is arranged inside the box 22, the driving mechanism comprises a servo hydraulic station 21 installed inside the box 22, a display 11 is installed on one side of the top of the base 1, a controller 18 is also installed inside the box 22, the controller 18 is connected to the display 11 and the servo hydraulic station 21 through wires, the controller 18 is a host or a PLC logic controller, the staff can control the servo hydraulic station 21 through the controller 18, thereby ensuring the normal operation of the fatigue tester, and the data generated by the fatigue tester can be transmitted to the display 11 through the controller 18 and displayed on the display 11, so as to facilitate the staff to observe;

[0027] like Figure 2 As shown, at least two limit rods 9 are installed on the top of the base 1, and a top plate 10 is fixedly installed on the top of the limit rod 9. A movable plate 27 is provided below the top plate 10. Both sides of the top of the movable plate 27 are connected to the top plate 10 through a first hydraulic rod 8, and a second hydraulic rod 26 is installed on the top of the movable plate 27. The bottom of the second hydraulic rod 26 extends to the bottom of the movable plate 27, and a detection pressure block 28 is fixedly installed on the second hydraulic rod 26. The top of the base 1 is connected to a mounting plate 32 through an adjustment mechanism, and a storage platform 14 is provided on the top of the mounting plate 32. The storage platform 14 is located at the detection pressure block 28. 8, the servo hydraulic station 21 is connected to the first hydraulic rod 8 and the second hydraulic rod 26 through hydraulic pipelines. When in use, the workpiece to be tested that matches the storage table 14 is placed on the storage table 14, and then the servo hydraulic station 21 can control the first hydraulic rod 8 to work, and the first hydraulic rod 8 pushes the moving plate 27 to move downward, so that the bottom of the detection block 28 contacts the top of the workpiece to be tested, and then the first hydraulic rod 8 is stopped, and then the servo hydraulic station 21 controls the second hydraulic rod 26 to quickly extend and retract, and the detection block 28 can quickly reciprocate to test the fatigue performance of the workpiece to be tested;

[0028] like Figure 3 As shown, a pair of positioning blocks 24 are installed on both sides of the base 1, and a guide rod 15 is fixedly installed between each pair of positioning blocks 24. Strip fixing plates 16 are provided at both ends of the storage table 14, and both ends of each strip fixing plate 16 extend above the guide rod 15, and both ends of the bottom of each strip fixing plate 16 are slidably sleeved on the guide rod 15 through a slider 2. Under the action of the guide rod 15, the strip fixing plate 16 can be limited so that the strip fixing plate 16 remains stable.

[0029] like Figure 3 As shown, a second threaded through hole 34 is opened on the top of each strip fixing plate 16, and a fastening bolt 17 is arranged inside the second threaded through hole 34, and the bottom of the fastening bolt 17 is in contact with the top of the mounting plate 32. Before testing, the staff can place the storage table 14 matching the workpiece to be tested on the mounting plate 32, and then push the strip fixing plate 16 so that the adjacent surfaces of the two strip fixing plates 16 are in contact with the side of the storage table 14, and then the staff tightens the fastening bolt 17 so that the bottom of the fastening bolt 17 is tightly against the top of the mounting plate 32 under the action of the second threaded through hole 34, so that the storage table 14 can be fixed, which is convenient for replacing the corresponding storage table 14 according to different workpieces to be tested.

[0030] like Figure 1As shown, a U-shaped protective plate 33 with an opening on the side is fixedly installed on the top of the base 1, and the top of the U-shaped protective plate 33 is fixed on the top edge of the top plate 10. Skirts 12 are extended at both ends of the opening of the U-shaped protective plate 33, and a limit plate 4 is installed on one side of each skirt 12. The limit plate 4 is set in an "L" shape, and a slide groove is formed between the limit plate 4 and the skirt 12. A strip sliding plate 6 is provided in the slide groove, and a baffle 7 is fixedly installed between the two strip sliding plates 6. The baffle 7 covers the opening of the U-shaped protective plate 33. During inspection, the staff can move the baffle 7 to the lower end so that the baffle 7 blocks the opening of the U-shaped protective plate 33. In this way, when the workpiece to be tested breaks due to reaching the fatigue limit, the debris generated by the fracture can be blocked by the U-shaped protective plate 33 and the baffle 7, and the debris will not collapse to the staff.

[0031] It should be noted that an opening groove 3 is provided at the bottom of the baffle 7 . When the baffle 7 is located at the lowest end, the guide rail 23 is located in the opening groove 3 , so that the guide rail 23 will not hinder the movement of the baffle 7 .

[0032] like Figure 1 As shown, a first threaded through hole 13 is opened on the side of each limit plate 4, and a locking bolt 5 is arranged inside the first threaded through hole 13. One end of the locking bolt 5 contacts the side of the strip sliding plate 6. Under the action of the first threaded through hole 13, by rotating the locking bolt 5, the end of the locking bolt 5 can be tightly pressed against the side of the strip sliding plate 6 to fix the baffle 7, so that the opening of the U-new protective plate 33 remains open, which is convenient for the installation plate 32 to enter and exit.

[0033] like Figure 3 As shown, the adjustment mechanism includes a positioning plate 29 fixed on the top of the base 1, and a third hydraulic rod 31 is installed on the side of the positioning plate 29. One end of the third hydraulic rod 31 is fixed on the side of the mounting plate 32. At least one guide rail 23 is provided at the bottom of the mounting plate 32. One end of the guide rail 23 extends out of a U-shaped protective plate 33. The bottom of the mounting plate 32 is slidably matched with the guide rail 23 through a strip guide block 30. The third hydraulic rod 31 is connected to the servo hydraulic station 21 through a hydraulic pipeline. When placing the workpiece to be measured, the staff can control the third hydraulic rod 31 to work and push the mounting plate 32 out from the inside of the U-shaped protective plate 33 along the guide rail 23. In this way, the U-shaped protective plate 33 will not hinder the installation of the object table 16 and the placement of the workpiece to be measured.

[0034] It should be noted that when the workpiece on the stage 14 moves to the position directly below the detection block 28, the end of the positioning block 24 contacts the side of the positioning plate 29 to complete the positioning of the stage 14, so that the workpiece can be prevented from being offset during detection.

[0035] The workpiece 32 is then moved back and forth to the top of the workpiece 32, and the workpiece 32 is moved back and forth to the top of the workpiece 32. ... moved back and forth to the top of the workpiece 32. The workpiece 32 is moved back and forth to the top of the workpiece 32. The workpiece 32 is

[0036] Furthermore, Figure 2 As shown, a plurality of connecting blocks 25 are installed on the side of the movable plate 27, and the other end of each connecting block 25 is slidably sleeved on the corresponding limiting rod 9, so that the movable plate 27 can be limited and kept stable.

[0037] Furthermore, Figure 1 As shown, a plurality of feet 20 are installed at the bottom of the box body 22, and a plurality of legs 19 are installed at the bottom of the base 1 away from the box body 22. The legs 19 and feet 20 can support the base 1 and the box body 22, so that the base 1 remains stable.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electro-hydraulic servo fatigue testing machine, comprising a base (1), characterized in that: A box body (22) is installed on one side of the bottom of the base (1), and a driving mechanism is arranged inside the box body (22); At least two limiting rods (9) are installed on the top of the base (1), a top plate (10) is fixedly installed on the top of the limiting rods (9), a movable plate (27) is provided below the top plate (10), both sides of the top of the movable plate (27) are connected to the top plate (10) through a first hydraulic rod (8), a second hydraulic rod (26) is installed on the top of the movable plate (27), the bottom of the second hydraulic rod (26) extends to the bottom of the movable plate (27), and a detection pressure block (28) is fixedly installed on the second hydraulic rod (26); A U-shaped protective plate (33) with an opening on the side is fixedly installed on the top of the base (1), the top of the U-shaped protective plate (33) is fixed on the top edge of the top plate (10), skirts (12) are extended from both ends of the opening of the U-shaped protective plate (33), and a limit plate (4) is installed on one side of each skirt (12), the limit plate (4) is arranged in an "L" shape, and a slide groove is formed between the limit plate (4) and the skirt (12), and a strip sliding plate (6) is provided in the slide groove, and a baffle (7) is fixedly installed between the two strip sliding plates (6), and the baffle (7) covers the opening of the U-shaped protective plate (33); The top of the base (1) is connected to a mounting plate (32) through an adjustment mechanism, a storage platform (14) is provided on the top of the mounting plate (32), the storage platform (14) is located below the detection pressure block (28), a pair of positioning blocks (24) are installed on both sides of the base (1), a guide rod (15) is fixedly installed between each pair of positioning blocks (24), strip fixing plates (16) are provided at both ends of the storage platform (14), both ends of each strip fixing plate (16) extend above the guide rod (15), and both ends of the bottom of each strip fixing plate (16) are slidably sleeved on the guide rod (15) through a slider (2); A second threaded through hole (34) is provided at the top of each strip-shaped fixing plate (16), a fastening bolt (17) is provided inside the second threaded through hole (34), and the bottom of the fastening bolt (17) is in contact with the top of the mounting plate (32).

2. The electro-hydraulic servo fatigue testing machine according to claim 1, characterized in that: The adjustment mechanism comprises a positioning plate (29) fixed on the top of the base (1), a third hydraulic rod (31) is installed on the side of the positioning plate (29), and one end of the third hydraulic rod (31) is fixed on the side of the mounting plate (32); At least one guide rail (23) is provided at the bottom of the mounting plate (32), one end of the guide rail (23) extends out of the U-shaped protective plate (33), and the bottom of the mounting plate (32) is slidably matched with the guide rail (23) via a strip guide block (30).

3. The electro-hydraulic servo fatigue testing machine according to claim 1, characterized in that: A plurality of connection blocks (25) are installed on the side of the movable plate (27), and the other end of each connection block (25) is slidably sleeved on the corresponding limiting rod (9).

4. The electro-hydraulic servo fatigue testing machine according to claim 1, characterized in that: The driving mechanism comprises a servo hydraulic station (21) installed inside a box (22); the servo hydraulic station (21) is respectively connected to a first hydraulic rod (8), a second hydraulic rod (26) and a third hydraulic rod (31) through hydraulic pipelines.

5. The electro-hydraulic servo fatigue testing machine according to claim 4, characterized in that: A display (11) is installed on one side of the top of the base (1), and a controller (18) is also installed inside the box (22). The controller (18) is connected to the display (11) and the servo hydraulic station (21) through wires.

6. The electro-hydraulic servo fatigue testing machine according to claim 1, characterized in that: An opening groove (3) is provided at the bottom of the baffle (7). When the baffle (7) is located at the lowest end, the guide rail (23) is located in the opening groove (3).

7. The electro-hydraulic servo fatigue testing machine according to claim 1, characterized in that: A first threaded through hole (13) is provided on the side of each limiting plate (4), a locking bolt (5) is provided inside the first threaded through hole (13), and one end of the locking bolt (5) contacts the side of the strip sliding plate (6).

8. The electro-hydraulic servo fatigue testing machine according to claim 1, characterized in that: A plurality of supporting feet (20) are installed at the bottom of the box body (22), and a plurality of supporting legs (19) are installed at a side of the bottom of the base (1) away from the box body (22).

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